EP1317115A3 - A firewall for filtering tunneled data packets - Google Patents

A firewall for filtering tunneled data packets Download PDF

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Publication number
EP1317115A3
EP1317115A3 EP02396174A EP02396174A EP1317115A3 EP 1317115 A3 EP1317115 A3 EP 1317115A3 EP 02396174 A EP02396174 A EP 02396174A EP 02396174 A EP02396174 A EP 02396174A EP 1317115 A3 EP1317115 A3 EP 1317115A3
Authority
EP
European Patent Office
Prior art keywords
data packet
filtering
rule
firewall
data packets
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02396174A
Other languages
German (de)
French (fr)
Other versions
EP1317115B1 (en
EP1317115A2 (en
Inventor
Tuomo Syvänne
Mika Jalava
Riku Salminen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stonesoft Corp
Original Assignee
Stonesoft Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stonesoft Corp filed Critical Stonesoft Corp
Publication of EP1317115A2 publication Critical patent/EP1317115A2/en
Publication of EP1317115A3 publication Critical patent/EP1317115A3/en
Application granted granted Critical
Publication of EP1317115B1 publication Critical patent/EP1317115B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
    • H04L63/0227—Filtering policies
    • H04L63/0236—Filtering by address, protocol, port number or service, e.g. IP-address or URL
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
    • H04L63/0227—Filtering policies
    • H04L63/0254—Stateful filtering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
    • H04L63/029—Firewall traversal, e.g. tunnelling or, creating pinholes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]

Abstract

A method of filtering a tunneled data packet comprising an outer header and an outer payload, the outer payload comprising an inner data packet comprising an inner header and an inner payload, where the value of at least one outer header field of the tunneled data packet is matched (402) to a first rule, and the action defined in the first rule is taken. Taking the action defined in the first rule comprises detecting (404) the inner data packet within the tunneled data packet, matching (406) the value of at least one field of the inner data packet to a second rule, and taking (408) the action defined in the second rule.
EP02396174A 2001-11-29 2002-11-21 A firewall for filtering tunneled data packets Expired - Fee Related EP1317115B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20012338A FI20012338A0 (en) 2001-11-29 2001-11-29 Firewall for filtering tunneled data packets
FI20012338 2001-11-29

Publications (3)

Publication Number Publication Date
EP1317115A2 EP1317115A2 (en) 2003-06-04
EP1317115A3 true EP1317115A3 (en) 2007-04-04
EP1317115B1 EP1317115B1 (en) 2008-04-02

Family

ID=8562368

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02396174A Expired - Fee Related EP1317115B1 (en) 2001-11-29 2002-11-21 A firewall for filtering tunneled data packets

Country Status (4)

Country Link
US (1) US7721084B2 (en)
EP (1) EP1317115B1 (en)
DE (1) DE60225892T2 (en)
FI (1) FI20012338A0 (en)

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Also Published As

Publication number Publication date
FI20012338A0 (en) 2001-11-29
DE60225892D1 (en) 2008-05-15
US7721084B2 (en) 2010-05-18
EP1317115B1 (en) 2008-04-02
DE60225892T2 (en) 2009-05-28
EP1317115A2 (en) 2003-06-04
US20030115328A1 (en) 2003-06-19

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